如何获取下载链接返回的文件名？

用户名

在浏览器中请求https://aka.ms/win32-x64-user-stable时，它将返回此文件名“ VSCodeUserSetup-x64-1.27.2.exe”进行保存。

我想获取相同的信息“ VSCodeUserSetup-x64-1.27.2.exe”，所以我尝试了以下操作：

$webRequest = [net.WebRequest]::Create("https://aka.ms/win32-x64-user-stable")
$test = $webrequest.GetResponse()

但是我遇到了错误：

“使用” 0“参数调用” GetResponse“的异常：”基础连接已关闭：发送中发生意外错误。“

是正确的方法还是其他方法？

我不明白为什么，因为我遵循了https://learn-powershell.net/2011/02/11/using-powershell-to-query-web-site-information/，并且没有为GetResponse提供arg。

雅各布

我可以通过执行以下操作来重现该问题：

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls11
$webRequest = [net.WebRequest]::Create("https://aka.ms/win32-x64-user-stable")
$test = $webrequest.GetResponse()

因此，可以肯定地说这是TLS问题。您可以通过运行以下命令检查TLS版本：

[Net.ServicePointManager]::SecurityProtocol

并尝试按照以下方式设置TLS版本：

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
$webRequest = [net.WebRequest]::Create("https://aka.ms/win32-x64-user-stable")
$test = $webrequest.GetResponse()

示例（TLS 1.1）：

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls11
Write-host "TLS Version: $([Net.ServicePointManager]::SecurityProtocol)"
$webRequest = [net.WebRequest]::Create("https://aka.ms/win32-x64-user-stable")
$webRequest.GetResponse()

TLS Version: Tls11
Exception calling "GetResponse" with "0" argument(s): "The underlying connection was closed: An unexpected error occurred on a send."
At line:4 char:1
+ $webRequest.GetResponse()
+ ~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : WebException

范例（TLS 1.2）：

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
Write-host "TLS Version: $([Net.ServicePointManager]::SecurityProtocol)"
$webRequest = [net.WebRequest]::Create("https://aka.ms/win32-x64-user-stable")
$webRequest.GetResponse()

TLS Version: Tls12


IsMutuallyAuthenticated : False
Cookies                 : {}
Headers                 : {Content-MD5, X-Cache, x-ms-blob-type, x-ms-lease-status...}
SupportsHeaders         : True
ContentLength           : 45189424
ContentEncoding         : 
ContentType             : application/x-msdownload
CharacterSet            : 
Server                  : ECAcc (lha/8DA7)
LastModified            : 12/09/2018 17:38:17
StatusCode              : OK
StatusDescription       : OK
ProtocolVersion         : 1.1
ResponseUri             : https://az764295.vo.msecnd.net/stable/f46c4c469d6e6d8c46f268d1553c5dc4b475840f/VSCodeUserSetup-x64-1.27.2.exe
Method                  : GET
IsFromCache             : False

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